Formula: C₂₂H₂₀O₁₃ CAS: 1260-17-9 EC No.: 215-023-3 M (Molar Mass): 492.39 g/mol D (Density): Not applicable mp (Melting Point): >250°C (decomposes) bp (Boiling Point): Not applicable

Assay (HPLC): ≥ 98.0 % Appearance: Red to dark red powder. Identification (IR): Passes test. Loss on Drying: ≤ 3.0 % Residue on Ignition: ≤ 0.5 % Heavy Metals (as Pb): ≤ 20 ppm Solubility: Soluble in alkaline solutions, slightly soluble in water Staining performance: Suitable for nuclear staining pH (1% solution): 4.0-6.0